Patent US958857A successfully refreshed from Google Patents.
Patent US2603200A successfully refreshed from Google Patents.
US2603200A
Expired / Lapsed
US
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Smrki plug construction
Assignee: —
•
Filing: —
•
Granted: 1952-07-15
•
Expires: 1969-07-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:22
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/46; H01T13/467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315298A
Cited
US1247975A
Cited
US1534986A
Cited
US2093848A
Cited
US2162062A
Cited
US2171929A
Cited
GB547119A
Cited
US2356104A
Cited
US2379635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |